"La Philosophie comme manière de vivre: Entretiens avec Jeannie Carlier et Arnold I. Davidson" by Pierre Hadot, Jeannie Carlier, Arnold I. Davidson, Paris: Albin Michel, translated by Michael Chase, (p. 269), 2001.
John Milton, James Augustus St. John, Charles Richard Sumner (1872). “The Prose Works of John Milton ...: With a Preface, Preliminary Remarks, and Notes”, p.468